83784634072 has 16 divisors (see below), whose sum is σ = 157099399560. Its totient is φ = 41891460864.

The previous prime is 83784634069. The next prime is 83784634091. The reversal of 83784634072 is 27043648738.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536488 + ... + 674824.

Almost surely, 2^83784634072 is an apocalyptic number.

It is an amenable number.

83784634072 is a deficient number, since it is larger than the sum of its proper divisors (73314765488).

83784634072 is a wasteful number, since it uses less digits than its factorization.

83784634072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214050 (or 214046 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 52.

The spelling of 83784634072 in words is "eighty-three billion, seven hundred eighty-four million, six hundred thirty-four thousand, seventy-two".